AA 3111 then 7L 789 at O'Hare
St Louis → Chicago → Baku
Timetable, Chicago time
13:00AA 3111 from St Louis at the gate
10:007L 789 to Baku leaves the gate
21 h apart on the timetable, overnight
7L 789 leaves 21 h after AA 3111 arrives on the timetable: more than half a day, so not a connection we count.